A school for children with additional needs is being investigated by police after footage emerged of staff using "inappropriate restraint techniques," the BBC has learned.
North Lanarkshire Council alerted police after discovering video evidence from Clydeview School in Motherwell.
The BBC understands a member of staff has been suspended over the footage.
It shows staff restraining a nine-year-old autistic boy. The investigation concerns a "small number" of pupils.
Parents of children at the school have been informed.
In a letter Derek Brown, North Lanarkshire Council's joint interim director of children and families, wrote: "We have discovered evidence of what, on the face of it, appears to be inappropriate use of pupil restraint and inappropriate restraint techniques being used."